fix(challenge-modal): publish challenge answers with pkc object schema

pkc-js's publishChallengeAnswers destructures { challengeAnswers } from its
argument, so passing a bare string[] left challengeAnswers undefined and
silently broke challenge submission (i.e. posting). Wrap answers in the object
form via a publishPublicationChallengeAnswers helper with error logging, and
align the ChallengePublication type with the real runtime signature.

src/components/challenge-modal/__tests__/challenge-modal.test.tsx

@@ -49,11 +49,15 @@ vi.mock('@bitsocial/bitsocial-react-hooks', () => ({
   useComment: ({ commentCid }: { commentCid?: string }) => (commentCid ? testState.commentsByCid[commentCid] : undefined),
 }));
 
-vi.mock('../../../lib/utils/challenge-utils', () => ({
-  getPublicationPreview: () => testState.publicationPreview,
-  getPublicationType: () => testState.publicationType,
-  getVotePreview: () => testState.votePreview,
-}));
+vi.mock('../../../lib/utils/challenge-utils', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../../../lib/utils/challenge-utils')>();
+  return {
+    ...actual,
+    getPublicationPreview: () => testState.publicationPreview,
+    getPublicationType: () => testState.publicationType,
+    getVotePreview: () => testState.votePreview,
+  };
+});
 
 vi.mock('../../../hooks/use-is-mobile', () => ({
   default: () => testState.isMobile,
@@ -224,7 +228,7 @@ describe('ChallengeModal', () => {
       input?.dispatchEvent(new KeyboardEvent('keydown', { bubbles: true, key: 'Enter' }));
     });
 
-    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith(['4']);
+    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith({ challengeAnswers: ['4'] });
     expect(testState.removeChallengeMock).toHaveBeenCalledOnce();
   });
 
@@ -310,7 +314,7 @@ describe('ChallengeModal', () => {
     await dispatchInput(container.querySelector<HTMLInputElement>('input[placeholder*="TYPE THE ANSWER HERE"]') as HTMLInputElement, 'step two');
     await clickButton('submit');
 
-    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith(['step one', 'step two']);
+    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith({ challengeAnswers: ['step one', 'step two'] });
     expect(testState.removeChallengeMock).toHaveBeenCalledOnce();
   });
 
@@ -369,7 +373,7 @@ describe('ChallengeModal', () => {
     expect(doneButton?.getAttribute('aria-label')).toBe('Finish challenge');
 
     await clickButton('Finish Challenge');
-    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith(['']);
+    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith({ challengeAnswers: [''] });
     expect(testState.removeChallengeMock).toHaveBeenCalledOnce();
   });
 
@@ -481,7 +485,7 @@ describe('ChallengeModal', () => {
       );
     });
 
-    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith(['']);
+    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith({ challengeAnswers: [''] });
     expect(testState.removeChallengeMock).toHaveBeenCalledOnce();
   });
 
@@ -538,7 +542,7 @@ describe('ChallengeModal', () => {
       );
     });
 
-    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith(['', '']);
+    expect(publication.publishChallengeAnswers).toHaveBeenCalledWith({ challengeAnswers: ['', ''] });
     expect(testState.removeChallengeMock).toHaveBeenCalledOnce();
   });
 

src/components/challenge-modal/challenge-modal.tsx

@@ -1,7 +1,7 @@
 import { useRef, useState, useEffect, useCallback } from 'react';
 import { useTranslation } from 'react-i18next';
 import { Challenge as ChallengeType, useAccount, useComment } from '@bitsocial/bitsocial-react-hooks';
-import { getPublicationPreview, getPublicationType, getVotePreview } from '../../lib/utils/challenge-utils';
+import { getPublicationPreview, getPublicationType, getVotePreview, publishPublicationChallengeAnswers } from '../../lib/utils/challenge-utils';
 import { stripGeneratedFortuneMarkup } from '../../lib/utils/post-options-utils';
 import useIsMobile from '../../hooks/use-is-mobile';
 import useChallengesStore from '../../stores/use-challenges-store';
@@ -40,6 +40,10 @@ const ImageChallenge = ({ challenge }: { challenge: string }) =>
     <div className={styles.challengeMedia}>Invalid image challenge</div>
   );
 
+const logPublishChallengeAnswersError = (error: unknown) => {
+  console.error('Failed to publish challenge answers:', error);
+};
+
 const isLocalIframeHostname = (hostname: string) => hostname === 'localhost' || hostname === '127.0.0.1' || hostname === '[::1]' || hostname.endsWith('.localhost');
 
 type ValidatedIframeUrl = { status: 'valid'; finalUrl: string; origin: string } | { status: 'invalid'; error: unknown } | { status: 'unsupported' };
@@ -391,7 +395,7 @@ const Challenge = ({ challenge, closeModal, abandonModal }: ChallengeProps) => {
 
   const onSubmit = () => {
     if (!publication) return;
-    publication.publishChallengeAnswers(answers);
+    void publishPublicationChallengeAnswers(publication, answers).catch(logPublishChallengeAnswersError);
     setAnswers([]);
     closeModal();
   };
@@ -413,7 +417,7 @@ const Challenge = ({ challenge, closeModal, abandonModal }: ChallengeProps) => {
         return;
       }
 
-      publication.publishChallengeAnswers(updatedAnswers);
+      void publishPublicationChallengeAnswers(publication, updatedAnswers).catch(logPublishChallengeAnswersError);
       setAnswers([]);
       closeModal();
     },

src/lib/utils/challenge-utils.ts

@@ -13,19 +13,28 @@ const resolveBoardIdentifier = (communityAddress: unknown): string => {
   return boardPath === communityAddress ? communityAddress : `/${boardPath}/`;
 };
 
-export type ChallengePublication = Partial<Comment> & {
+type ChallengeAnswersInput = string[] | { challengeAnswers?: string[] };
+
+export type ChallengePublication = Partial<Omit<Comment, 'publishChallengeAnswers'>> & {
   author?: unknown;
   commentCid?: string;
   communityAddress?: string;
   content?: string;
   link?: string;
   parentCid?: string;
+  publishChallengeAnswers?: (challengeAnswers?: ChallengeAnswersInput) => Promise<void> | void;
   shortCommunityAddress?: string;
   subplebbitAddress?: string;
   title?: string;
   vote?: number;
 };
 
+export const publishPublicationChallengeAnswers = async (publication: ChallengePublication | undefined, challengeAnswers: string[]) => {
+  const publishChallengeAnswers = publication?.publishChallengeAnswers;
+  if (typeof publishChallengeAnswers !== 'function') return;
+  await publishChallengeAnswers.call(publication, { challengeAnswers });
+};
+
 export const redactGeneratedFortuneFromPublication = <T>(publication: T): T => {
   if (!publication || typeof publication !== 'object') {
     return publication;